Adjustable gun sight



. warm W) 33-259. (we 9,215,513 ER on p 1 1940- c. F. LEFEVER 2,215,513

ADJUSTABLE GUN SIGHT Filed April 24, 1959 INVENT OR.

GHARLE S F. LE FEVER A TTORN E YS 33. GEOMETRICAL INSTRUMENTS.

Patented Sept. 24, 1940 UNITED STATES PATENT OFFICE ADJUSTABLE GUN SIGHTCharles F. Lefever, Plymouth, Mich., assignor to Daisy ManufacturingCompany, Plymouth, Mich., a corporation of Michigan Application April24, 1939, Serial No. 269,801

1 Claim.

The invention relates to adjustable sights for guns and consists in thenovel construction and method of forming the same as hereinafter setforth.

In the drawing:

Figure 1 is a perspective view of a portion of the gun barrel to whichmy improved adjustable sight is to be secured and the adjustable sightdetached therefrom;

Figure 2 is a longitudinal section through the barrel and sight attachedto each other;

Figure 3 is a similar view showing the sight in elevated position;

Figure 4 is a cross section on line 44 of Figure 3;

Figure 5 is a plan view of the sight and barrel.

A is a gun barrel such for instance as the false barrel of a spring airgun. B is a rear sight member mounted on the top of the barrel A so asto be vertically adjustable in relation thereto. This sight member isformed preferably of a sheet metal stamping, which has integraltherewith a shank member C extending forward of the barrel and with itsforward end attached thereto, preferably by spot welding. This shank,therefore. forms a spring arm which permits of flexing to raise or lowerthe sight B. The means for efiecting this raising and lowering of thesight comprises a screw D which has a threaded engagement with the shankC adjacent to the sight, said screw having a grooved head portion E forengaging a slot in the barrel A. As shown in Figure 1, the slot F in thebarrel A is of a width less than the diameter of the head E, butsufficient to receive the core portion at the bottom of the groove insaid head. One end of this slot is enlarged at F sufliciently to receivethe head E so that by moving the shank longitudinally of the barrel Athe groove E in the head E may be engaged with the sides of the groove Fin the barrel A. This permits of assembling the parts in the manner justdescribed, after which the forward end of the shank C is spot welded tothe barrel to hold the same in rigid relation thereto. The shank C ispreferably formed with a reduced width portion C intermediate theportion C spot welded to the barrel and the remainder of the shank, saidreduced width portion forming a spring tongue permitting the flexing ofthe shank. To facilitate assembly of the parts the barrel A is formedwith a struck-out pintle G for engaging a corresponding recess H in theportion C these parts engaging with each other after the grooved head Eis properly engaged with the groove F of the barrel. Thus, the partswill be properly positioned in relation to each other prior to theoperation of spot welding.

With the construction as described the sight B may be raised or loweredby merely turning the screw D with a screw driver or other tool. Thehead E being swiveled in the barrel A, it is evident that the turning ofthe screw will lift or depress the portion of the shank having thethreaded engagement therewith, this correspondingly moving the sight.The construction is one which is exceedingly simple to manufacture andeasily and accurately assembled.

What I claim as my invention is:

The combination of a gun barrel having a slot in the top portion thereofwith an entrance aperture of greater width at one end of said slot, asight provided with a shank for extending longitudinally of the barrel,a screw having a threaded engagement with said shank adjacent to saidsight and provided with a grooved head engaged with said slot andadapted to be entered through said enlarged aperture, the end of saidshank spaced from said sight and screw being welded to said barrel.

CHARLES F. LEFEV'ER.

